Home / 20,122.07-27,767.15-11,169.58

Finding the Fourth Proportional to 20,122.07, 27,767.15 and 11,169.58

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Solution

The fourth proportional to 20,122.07, 27,767.15 and 11,169.58 is: 15,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.07 : 27,767.15 = 11,169.58 : x
  2. Step 2: Convert to fraction form
    20,122.07/27,767.15 = 11,169.58/x
  3. Step 3: Cross multiply
    20,122.07x = 27,767.15 × 11,169.58
  4. Step 4: Simplify right side
    20,122.07x = 310,147,208.61
  5. Step 5: Solve for x
    x = 310,147,208.61/20,122.07
  6. Step 6: Final answer
    x = 15,413.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.